ABSTRACT:Our paper aims for the controllable synthesis of nanoscale zerovalent iron (NZVI) particles by borohydride reduction method. It is a primary and effective liquid phase reduction method for the synthesis of zerovalent iron nanoparticles. Synthesized nanoscale zerovalent iron (NZVI) particles were investigated by a series of characterizations. Each sample of synthesized iron particles was characterized by Scanning Electron Microscope (SEM), Transmission Electron Microscope (TEM), powder X- Ray Diffractometer (XRD). Nano zerovalent iron is a promising reagent for in situ reduction of a variety of subsurface contaminants. NZVI is emerging as new option for the treatment of contaminated soil and ground water. NZVI has issued as an excellent catalyst for redox reaction and fenton process due to a large surface area, a higher reactivity, non toxicity and inexpensiveness in environmental remedy.